He was understandably rusty, but what was the cause for his lack of effort?

On another note: the Knicks shot 75% or whatever in the first quarter, but finished the game at 49%. So, for whatever reason (whether it was our defense or just missing shots), they shot well below 50% in quarters 2, 3, and 4. The fact that, despite that, we got outscored in every single quarter is really disturbing. Boo.